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The information you need needs a wiring diagram!
The Related Links have diagrams and the answers to the Related Questions shown below should also be of some help to you.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
To wire a light switch, turn off the power to the circuit, remove the existing switch, connect the wires to the corresponding terminals on the new switch (typically, one wire goes to the common terminal, and the other two to the traveler terminals), and then securely mount the new switch in place. Remember to follow all safety precautions and local electrical codes.
A light switch breaks one half of the circuit to the light. "CODE" says to break the black wire. I usually break the white since this is the ground and should have less chance of a shock from a bad switch. Since it is only half the circuit if you are replacing a switch it does not matter which wire goes to which terminal on the switch. This applies to a single pole switch. A double or triple switch is something else. If a light that turn on from only one place is a single. If it turns on from 2 places, two doorways into a room or top and bottom of stairs it is a two way switch and it does matter how it is wired. Nothing will blow up, it simply will not work from both if wired wrong.
for USA, Canada and other countries running a 60 Hz supply service.
Light switch connection is usually straight forward. Find your incoming hot wires, black and white. With the switch in the off (down) position and the power disconnected , connect the black wire to the top screw of the switch. Find the load wires and connect the black to the bottom screw of the switch. Connect the two remaining white wires together with a wire nut and push them to the back of the switch box. Install the switch into the wall box, replace switch plate cover. Turn the breaker (power) back on. Flip the switch to the up position and the light should come on.
<><><>
As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
I assume that you have an un-switched Hot (Black) and neutral (White) power in a box where you want to put a light (1st light) and two other lights you want powered by a single switch. Run a Romex cable with Black, White and Bare lead (14 gauge for 15 A circuit or 12 gauge for a 20 A circuit) to the switch. At the powered light connect the black wires together with a wire nut. Don't connect any light wire. At the switch connect the black wire you ran to one side of the switch and the white wire to the other side of switch and wrap black tape around the white wire to identify it as hot. Connect the bare wire to the green screw on switch.
At the 1st light connect the black wire from the switch to the black HOT power wire. Wrap black tape on the white wire from the switch and connect to the black wire on the light and a Black wite to 2nd light and connect all these together with a wire nut. At the 1st light connect the White wire from power source to the white wire on the light and the white wire going to the 2nd light. Wire together all the bare wires in light 1 box.
At second light run a romex wire to 3rd light and connect all the black wires together (3 wires) and all white wires together (3 wires) and the three bare wires.
At the 3rd light connect 2 black wires together and the two white wires together. Some older lights may have two black wires. If this is the case it doesn't matter which of the two light wires you designate as "White", just pick one.
A light switch wiring is simple. You just need to contend with three wires. For typical home wiring you would have a hot wire (black), a neutral wire (white) and a ground wire (bare or green). You switch only the hot wire.
The hot wire from the supply side is connected to one terminal of the switch. Connect the hot wire for the load to the other side of the switch. Connect the white wires together with a wirenut. The ground wire is connected to the ground terminal of the switch. This is often connected to the supply and load grounds via a pigtail wire and a wirenut connecting three wires together.
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How do you wire a light and switch with the 2 wire old romex?
To wire a light and switch using 2-wire Romex, connect the black wire to the brass screw on the switch, the white wire to the light fixture, and the white wire to the silver screw on the switch. Make sure to cap the unused wire at both ends for safety. Be sure to turn off the power before starting and consult a professional if you are unsure.
How do you connect multiple lights to one switch starting at the light?
To connect multiple lights to one switch starting at the light, you will need to run a cable from the first light fixture to the switch. Connect the hot wire to the switch, along with a pigtail wire to connect to each light. Then connect each light fixture to the pigtail wire to create a parallel circuit. Make sure to follow proper safety precautions and consult a professional if needed.
How do you wire a cable with a black wire a brown wire grey wire and earth wire to a light switch in my car which has 3 holes 1 for single switch and 1 for a doubleswitch?
Connect the black wire to the single switch hole, the brown wire to one of the holes on the double switch, and the gray wire to the other hole on the double switch. The earth wire should be connected to the grounding point on the light switch. Make sure to follow proper safety procedures and consult a professional if you are unsure.
Can you extend power through a 3 wire switch leg for a half switched outlet to a new switch for a new light?
Yes, you can extend power through the 3-wire switch leg to a new switch for a new light. You would need to connect the hot wire to the common terminal on the existing switch, then extend the hot wire to the new switch, along with the traveler wire. At the new switch, connect the hot wire to the common terminal and the traveler wire to one of the traveler terminals.
Light switch has 4 wire colors red and white and green and black which is the hot wire?
You have a 3 way switch. Your black wire is the hot wire. Your green wire is the ground wire. Your red and white wires go to the light and other switch. You should have gotten a wiring diagram with your switch.
How do I wire a light switch to a light?
To wire a light switch to a light, first turn off the power to the circuit. Connect the black wire from the switch to the black wire from the light. Connect the white wire from the switch to the white wire from the light. Finally, connect the ground wire from the switch to the ground wire from the light. Secure all connections with wire nuts and cover with electrical tape. Turn the power back on and test the switch to ensure it is working properly.
What is the wiring diagram for a 4 wire light switch?
A 4-wire light switch typically includes a ground wire, a hot wire, a neutral wire, and a traveler wire. The wiring diagram for a 4-wire light switch will show how these wires are connected to the switch terminals to control the light fixture.
How do you wire a light and switch with the 2 wire old romex?
To wire a light and switch using 2-wire Romex, connect the black wire to the brass screw on the switch, the white wire to the light fixture, and the white wire to the silver screw on the switch. Make sure to cap the unused wire at both ends for safety. Be sure to turn off the power before starting and consult a professional if you are unsure.
When a light switch is turned on what travels through the wire?
Current flows through a wire when a light switch is turned on.
How do you wire a switch to a light?
To wire a switch to a light, you connect the hot wire from the power source to one terminal on the switch, then connect another wire from the other terminal of the switch to the hot terminal on the light fixture. Finally, connect the neutral wires from the power source and the light fixture together.
How to wire multiple lights to one switch?
To wire multiple lights to one switch, you can connect the lights in parallel by running a cable from the switch to each light fixture. Make sure to connect the hot wire from the switch to the hot wire of each light, and the neutral wire from the switch to the neutral wire of each light. This will allow you to control all the lights with a single switch.
What is the purpose of the red wire in a light switch?
The purpose of the red wire in a light switch is to carry electrical current from the switch to the light fixture, allowing the switch to control the flow of electricity and turn the light on or off.
How does a 4 wire light switch function in comparison to a standard light switch?
A 4-wire light switch has an additional wire for controlling a separate function, like a fan or dimmer, while a standard light switch only has 3 wires for on/off control.
What is the purpose of the red wire on a light switch?
The purpose of the red wire on a light switch is to carry electrical current to the switch, allowing it to control the flow of electricity to the light fixture.
What is the difference between a line and load in a light switch circuit?
In a light switch circuit, the line is the wire that brings power into the switch, while the load is the wire that carries power from the switch to the light fixture. The line wire is typically connected to the power source, while the load wire is connected to the light fixture.
How can I wire a bathroom fan and light to operate on the same switch?
To wire a bathroom fan and light to operate on the same switch, you will need to connect the hot wires from both the fan and light to the hot wire coming from the switch. Then, connect the neutral wires from both the fan and light to the neutral wire coming from the switch. Finally, connect the ground wires from both the fan and light to the ground wire coming from the switch. This will allow you to control both the fan and light with a single switch.
What is the wire diagram for a light switch?
A wire diagram for a light switch shows the connections between the switch and the electrical wires in a building. It illustrates how the switch is wired to control the flow of electricity to the light fixture.
